Grey Parrot (Psittacus erithacus erithacus)
The Grey Parrot Anatomy Project has been established in part to improve upon and create technology that allows the world to study anatomy of any animal. While the focus is on the grey parrot, the methodology being developed has already been used on birds, mammals (including humans), reptiles and more. One of the advances has been the development of BriteVu®, a new contrast agent that allows researchers to see vasculature (with the aid of a CT scan) down to the capillary level. A grey parrot head is seen here with vessels highlighted using BriteVu®. One interesting finding has been the tortuous vessels at the base of the head. These vessels have slack to allow the bird to turn its head around without significantly altering blood flow.